diff --git a/block/src/qcow_async.rs b/block/src/qcow_async.rs
index a90fc2d08..4e0826c65 100644
--- a/block/src/qcow_async.rs
+++ b/block/src/qcow_async.rs
@@ -119,3 +119,5 @@ impl disk_file::Resizable for QcowDiskAsync {
         })
     }
 }
+
+impl disk_file::DiskFile for QcowDiskAsync {}